The question shouldn't be what are the possible way to expose the data, there are countless ways of doing that. The question is what the data is used for, what the user is looking for. What are the insights the user is trying to extract from the data.
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Vitaly MijiritskyDec 21 '12 at 16:18

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@EduardoMolteni I didn't mean that it's vague, I'm suggesting a more effective approach to solving the problem. You're asking what visualizations are there, and you should be asking "what visualizations will help me understand the following aspects of the data: ____".
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Vitaly MijiritskyDec 21 '12 at 17:42

2 Answers
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If you want to show the movement data to someone who is a bit more pragmatic, instead of using line charts, you could use a simplified map of the place.

Each building - a rectangle

Each person - a tiny circle/square

Each department - a color-coded row of persons;if you want to track
individuals as well, you could asign to each person a specific
position in that row.

Every building has rows for every department

Using the data you have, you take a snapshot of where everyone is every 5 minutes, and redraw the map every 5 seconds and animate the persons that move (for example from building 1 to building 3, to their respective department/rows)

Put a big clock at the top and voila, you can see:

which department moves around the most

which building is preffered by which department

at what time do people move about the most etc.

I made a drawing, but: "... Earn more than 10 reputation to post images."

How do you think this visualization helps to gain insight into the movement of people within the building? I am finding it a little bit difficult to interpret and understand straight away. What is the story here, and what does it tell you about the people that you don't already know from the raw data?
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Michael LaiMar 26 '13 at 0:09